Powertrain, generic · Transmission

P0984 Shift Solenoid E Control Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Range/performance fault in the drive circuit of shift solenoid E. Ford checks SSE with P0770, P0985 and P0986 only, GM's documented tables never reach letter E, and even Ferrari's DCT list, which reuses most of its neighbours, skips P0984. The one codegenau source is FCA: in recall S55 for the 9-speed front-drive transaxle it names P0984 together with P0975, P0978 and P0981. Under old TCM software, a range sensor harness with poor crimps and intermittent high resistance could set them; with new software the same fault shows as P0901, and these four codes then point to a separate transmission problem. Otherwise the code rests only on the CARB rule for transmission output checks. Low/high are P0985/P0986.

Likely causes

Range sensor harness with weak crimps (FCA 9-speed recall)
TCM software below the recall level
Internal transmission fault when the code returns after the update
Faulty driver stage in the control module

Symptoms

  • Sudden neutral or loss of drive (FCA 9-speed)
  • MIL or transmission warning on
  • Limp mode

Repair estimate

DifficultyHardWorkshop job
Parts and labour€0–1,500
Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

shift solenoid ewiring harnesstcm

Related codes

P0985P0986P097EP0770P0981P0901

References: static.nhtsa.gov, law.cornell.edu.